[2] His maternal grandparents were Helen (née Ten Eyck) Lansing (daughter of Abraham Ten Eyck) and Gerrit Yates Lansing, a U.S. Representative who served as the Chancellor of the University of the State of New York.

[6] In 1871, Pruyn went on to become president of the Embossing Company, one of the major toy manufacturers of the late nineteenth and early twentieth centuries.

[11] While president, Pruyn hired architect Robert W. Gibson to erect a new granite and marble headquarters at 60 State Street in Albany, which opened in May 1904.

Pruyn hired architects Potter & Robertson to design a house for his family at the corner of Lancaster and Willett Streets.

He also established the 13,000 acre (53 km²) Santanoni Preserve on Newcomb Lake in the Adirondack Mountains upstate of New York, which is today a state park and National Historic Landmark.

When McKinley's condition worsened, Roosevelt left directly from Santanoni to Buffalo where he was inaugurated as the 26th President of the United States.

[1] A portrait of Pruyn by William Merritt Chase was owned for many years by the National Commercial Bank and Trust Co. in Albany.